Difference between solenoid valve and electric valve
1. Switch type:
The solenoid valve is driven by coil and can only be opened or closed, and the action time is short.
The motor can be used to drive or close the valve.
2. Nature of work:
Generally, the flow coefficient of solenoid valve is very small, and the working pressure difference is very small. For example, the flow coefficient of 25 caliber solenoid valve is much smaller than that of 15 caliber electric ball valve. The drive of solenoid valve is through solenoid coil, which is easy to be damaged by voltage impact. Equivalent to the function of the switch, that is to open and close two functions.
Electric valve drive is generally motor, more resistant to voltage shock. Solenoid valve is fast open and fast close, generally used in small flow and small pressure, requiring high switching frequency of the electric valve on the contrary. The opening of the electric valve can be controlled, and the state can be open, closed, half open and half closed, which can control the flow of medium in the pipeline, but the solenoid valve can not meet this requirement.
Generally, the solenoid valve can be reset after power failure, and the electric valve needs to add a reset device for such function.
3. Applicable process:
Solenoid valve is suitable for some special process requirements, such as leakage, special fluid medium, etc., and its price is relatively high.
Solenoid valve is generally used for regulation, but also has switch value, such as: fan coil end.